Home / 3,861.45-5,787.70-1,777.08

Finding the Fourth Proportional to 3,861.45, 5,787.70 and 1,777.08

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Solution

The fourth proportional to 3,861.45, 5,787.70 and 1,777.08 is: 2,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.45 : 5,787.70 = 1,777.08 : x
  2. Step 2: Convert to fraction form
    3,861.45/5,787.70 = 1,777.08/x
  3. Step 3: Cross multiply
    3,861.45x = 5,787.70 × 1,777.08
  4. Step 4: Simplify right side
    3,861.45x = 10,285,205.92
  5. Step 5: Solve for x
    x = 10,285,205.92/3,861.45
  6. Step 6: Final answer
    x = 2,663.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.